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A222199
as a simple table
n
a(n)
3
48
4
1344
5
23580
6
3273360
7
257165468
8
171785923808
9
61997157648756
10
196554899918485160
[48,1344,23580,3273360,257165468,171785923808, 61997157648756,196554899918485160]